How severe is CVE-2026-42640?

CVE-2026-42640 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-42640 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-42640?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-42640 have an EU (EUVD) identifier?

Yes. CVE-2026-42640 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36816.

When was CVE-2026-42640 published?

CVE-2026-42640 was published on 2026-06-15 and last updated on 2026-06-17.

CVE-2026-42640

CVE-2026-42640 is a medium-severity vulnerability with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-862.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-36816
Weakness: CWE-862
Published: 2026-06-15
Last modified: 2026-06-17

Description

Unauthenticated Broken Access Control in Classified Listing <= 5.3.8 versions.

Frequently asked questions

What is CVE-2026-42640?: Unauthenticated Broken Access Control in Classified Listing <= 5.3.8 versions.
How severe is CVE-2026-42640?: CVE-2026-42640 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-42640 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-42640?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-42640 have an EU (EUVD) identifier?: Yes. CVE-2026-42640 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36816.
When was CVE-2026-42640 published?: CVE-2026-42640 was published on 2026-06-15 and last updated on 2026-06-17.

References

https://patchstack.com/database/wordpress/plugin/classified-listing/vulnerability/wordpress-classified-listing-plugin-5-3-8-broken-access-control-vulnerability?_s_id=cve

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